KR101296783B1 - Method for forming three dimentional design on an three dimentional article and the three dimentional cover formed by the same method - Google Patents

Abstract

The present invention relates to a method for forming a three-dimensional surface pattern on the surface of various three-dimensional molded article to be mounted on the interior and exterior of automobiles and various panels of various home appliances, and a molded cover manufactured by using the method. Preparing a mold, forming a molded part corresponding to a molding mold in the lenticular sheet, cutting and separating the molded part of the lenticular sheet, and bonding the molded part of the lenticular sheet and the transparent thermoplastic sheet integrally, three-dimensionally Producing a molding cover, and forming a three-dimensional surface pattern on the surface of the three-dimensional molded article.
According to the present invention, not only the three-dimensional surface pattern can be perfectly formed on the surface of the three-dimensional molded article having a three-dimensional surface such as a casing or cover of an automobile finishing panel or various electronic devices, but also a concave lens formed on the front surface of the lenticular sheet. By fully protecting the parts from external impact, the three-dimensional stereoscopic effect lasts for a long time, and the surface of the three-dimensional molded product is more beautifully shiny to secure a high-quality appearance, thereby obtaining an excellent effect of greatly improving the quality competitiveness of the finished product.

Description

TECHNICAL FOR FORMING THREE DIMENTIONAL DESIGN ON AN THREE DIMENTIONAL ARTICLE AND THE THREE DIMENTIONAL COVER FORMED BY THE SAME METHOD}

The present invention relates to a method for forming a three-dimensional surface pattern on the surface of various three-dimensional molded article to be mounted on the interior and exterior of automobiles and various panels of various home appliances, and a molded cover manufactured by using the method. A matching mold is produced, a lenticular film having a three-dimensional three-dimensional pattern formed on the back is vacuum-formed to conform to a three-dimensional molded article through primary vacuum molding, and a three-dimensional object is coated by applying a special adhesive to the transparent thermoplastic sheet. After forming and joining the secondary vacuum according to the molded article, and cut it to produce a molded cover to match the surface contour of the three-dimensional molded article, and adhered to the three-dimensional molded article to form a three-dimensional pattern of the three-dimensional molded article to form a three-dimensional pattern and It relates to a three-dimensional molding cover manufactured using this method.

In general, various three-dimensional molded articles using plastic synthetic resins or aluminum materials are used for automobile console boxes, panels around instrument panels, and casings and covers of various electronic devices.

In particular, dashboards and audio decks, gear transmissions, air bags, door locks, and window openings and the like installed around the driver's interior and passenger seat are installed with various controls and convenience devices. A three-dimensional interior finishing panel is installed between the edge of the device and the convenience device, and the interior finishing material is installed. Such a finishing panel is an important factor in determining the appearance of the interior of the vehicle.

Such a finishing panel of automobiles and casings or covers of various electronic devices have a significant influence on the aesthetics of the finished product, and in view of the current trend of emphasizing the personalization of the user, the aesthetic requirements are increasingly increased and a high quality appearance is required. .

In accordance with the current trend, conventionally, two-dimensional patterns and pictures were formed on the surface of a three-dimensional molded product by using various techniques such as water transfer, insert film, painting, silk printing, and pad printing to improve the appearance quality of the finished product. .

However, such a conventional two-dimensional pattern has a monotonous effect, and thus three-dimensional three-dimensional patterns, letters, and figures (hereinafter, simply referred to as "three-dimensional patterns") have been spotlighted as surface patterns.

Such a three-dimensional pattern can obtain a three-dimensional stereoscopic effect through the lenticular sheet, such a lenticular sheet is a transparent polyethylene terephthalate (PET), polypro propylene (PP), acrylic (ACRYL) or PVC (polyvinyl chloride) It is manufactured through the light, etc., and a plurality of fine concave lenses are formed on the front side, and the opposite back side is made of a flat plastic surface, and a three-dimensional pattern or a three-dimensional pattern is printed directly on the flat back side according to the use and size Laminating the printed paper, and when viewed from the front side where the concave lenses are formed, the three-dimensional pattern is expressed three-dimensionally outward to produce a three-dimensional effect.

Surface pattern formation using such a lenticular sheet (Lenticular Sheet) is generally made of a method of attaching the lenticular sheet to the surface of the advertising material having a two-dimensional plane by using a heat adhesive, etc., to obtain a three-dimensional pattern advertising. The present invention has a problem in that it is not applicable to the surface of a three-dimensional molded article having a three-dimensional surface such as a finishing panel of a vehicle, a casing or a cover of various electronic devices, and the like.

An object of the present invention is to solve the conventional problems as described above, by applying a lenticular sheet (Lenticular Sheet) to the surface of the three-dimensional three-dimensional molded article having a three-dimensional surface, such as a casing or cover of automobile finishing panels or various electronic devices The present invention provides a three-dimensional pattern forming method of a three-dimensional molded article capable of forming a three-dimensional surface pattern, and a three-dimensional molded cover manufactured using the method.

In addition, another object of the present invention is to apply a lenticular sheet (Lenticular Sheet) to the surface of the three-dimensional molded article can not only form a three-dimensional surface perfectly, but also the concave lens portion formed on the front surface of the lenticular sheet from external impact 3D pattern formation method and method of three-dimensional molded products that can secure the high quality appearance by securing the high quality appearance by making the three-dimensional solid effect last for a long time and make the surface of the three-dimensional molded product more beautifully shiny. To provide a three-dimensional molded cover manufactured using.

In order to achieve the above object, the present invention, in the method for forming a three-dimensional surface pattern on the surface of the three-dimensional molded article,

Manufacturing a molding die corresponding to the three-dimensional molded article;

The mold is placed in a vacuum molding machine, and the lenticular sheet is placed on the mold, and the lens surface is directed to the upper side, and the back surface on which the three-dimensional surface pattern is printed is directed to the molding mold, followed by primary vacuum molding to make the lenticular sheet. Forming a molding part corresponding to the molding mold in the mold;

After the first vacuum molding, lifting the lenticular sheet out of the mold of the vacuum molding machine, and cutting and separating the molded part of the lenticular sheet;

The molded part of the lenticular sheet is again raised on a molding mold in a vacuum molding machine, and a transparent thermoplastic resin sheet is disposed thereon, wherein the transparent thermoplastic resin sheet is coated with a transparent adhesive on one side, and the transparent adhesive is a molded part of the lenticular sheet. Disposing to the side, and then secondarily forming a vacuum to bond the molded part of the lenticular sheet and the transparent thermoplastic sheet integrally;

After the second vacuum molding, the molded part of the lenticular sheet and the transparent thermoplastic resin sheet are lifted from the molding die of the vacuum molding machine, and the transparent thermoplastic resin sheet is cut and separated along the molded part of the lenticular sheet, and the three-dimensional molding cover is removed. Manufacturing step; And

Applying an adhesive on the inner surface of the three-dimensional molded cover or attaching to the outer surface of the three-dimensional molded article using a double-sided tape to form a three-dimensional surface pattern on the surface of the three-dimensional molded article; 3D pattern forming method comprising To provide.

In another aspect, the present invention is preferably the transparent thermoplastic resin sheet of the three-dimensional molded article which is any one of a transparent acrylic resin, transparent polystyrene (PT: Polythiophene), transparent PVC (PVC: Polyvinyl chloride), transparent PC (PC: Poly carbonate) Provided are a three-dimensional pattern formation method.

And the present invention preferably provides a three-dimensional pattern forming method of the three-dimensional molded article is the transparent thermoplastic resin sheet is a transparent acrylic resin.

In addition, the present invention preferably is the first vacuum forming step using a heater to heat the lenticular sheet for 23 seconds to 25 seconds at a temperature of 310 ℃ ~ 320 ℃, then to a vacuum suction pressure of -720mmkg (0.0096Mpa) Provided is a method for forming a three-dimensional pattern of a three-dimensional molded article, which is formed by vacuum molding to form a molded part in the lenticular sheet conforming to the outer contour of the molding die.

And the present invention is preferably a transparent adhesive agent applied to the transparent thermoplastic resin sheet as a main component of the synthetic rubber and synthetic resin, has an evaporation residue of 39.0 to 42.0 (%), 3,500 at a temperature of 25 ℃ It provides a three-dimensional pattern forming method of a three-dimensional molded article having a viscosity of from 5,000 (cps) and a specific gravity of 0.85 (20 ℃) at a temperature of 20 ℃.

In another aspect, the present invention preferably provides a three-dimensional pattern forming method of the three-dimensional molded article is applied to the one side of the transparent thermoplastic resin sheet 35㎛ ~ 38㎛ through a roller.

And the present invention is preferably the secondary vacuum forming and bonding step is to heat the transparent thermoplastic resin sheet for 1 minute 20 seconds to 1 minute 30 seconds at a temperature of 310 ℃ to 320 ℃ using a heater, -720mmkg It provides a method for forming a three-dimensional pattern of a three-dimensional molded article by vacuum molding at a vacuum suction pressure of (0.0096Mpa) to integrally join the molded part of the lenticular sheet and the transparent thermoplastic resin sheet.

In order to achieve the above object, the present invention, in the three-dimensional molded cover for forming a three-dimensional surface pattern on the surface of the three-dimensional molded article,

A lenticular sheet composed of a three-dimensional solid structure corresponding to the outer contour of the three-dimensional molded article, a three-dimensional surface pattern printed on the rear surface, and a plurality of fine concave lens surfaces formed on the front surface thereof; And

A transparent thermoplastic resin sheet formed of the same three-dimensional solid structure as the lenticular sheet and integrally bonded to a front surface of the lenticular sheet through a transparent adhesive; wherein the lenticular sheet and the transparent thermoplastic resin sheet are molded in a vacuum molding machine. Vacuum forming on the mold to provide a three-dimensional molded cover integrally bonded.

And the present invention is preferably the transparent thermoplastic resin sheet is any one of a transparent acrylic resin, transparent polystyrene (PT: Polythiophene), transparent PVC (PVC: Polyvinyl chloride), transparent PC (PC: Poly carbonate) To provide.

In addition, the present invention preferably the transparent adhesive is a synthetic rubber and a synthetic resin as a main component, has an evaporation residue of 39.0 to 42.0 (%), viscosity of 3,500 to 5,000 (cps) at a temperature of 25 ℃ And it provides a three-dimensional molding cover having a specific gravity of 0.85 (20 ℃) at a temperature of 20 ℃.

In another aspect, the present invention preferably provides a three-dimensional molded cover coated with 35 μm to 38 μm on one surface of the transparent thermoplastic resin sheet.

According to the three-dimensional pattern forming method of the three-dimensional molded article according to the present invention and the three-dimensional molded cover manufactured using the method, the three-dimensional molded cover by forming and bonding to a shape corresponding to the three-dimensional molded article using a lenticular sheet and a transparent thermoplastic resin sheet And attaching it to the outer surface of the three-dimensional molded article using an adhesive or double-sided tape to form a three-dimensional surface pattern on the surface.

Therefore, according to the present invention, not only the three-dimensional surface pattern can be perfectly formed on the surface of the three-dimensional molded article having a three-dimensional surface such as a finishing panel of automobile or a casing or cover of various electronic devices, but also a concave formed on the front surface of the lenticular sheet. By fully protecting the lens unit from external impact, the three-dimensional stereoscopic effect lasts for a long time, and the surface of the three-dimensional molded product is more beautifully polished to secure a high-quality appearance, thereby achieving an excellent effect of greatly improving the quality competitiveness of the finished product. .

1 is an explanatory view showing a step of preparing a molding mold conforming to a three-dimensional molded article in the three-dimensional pattern forming method of the three-dimensional molded article according to the present invention.
FIG. 2 is an explanatory diagram illustrating a step of forming a molded part corresponding to a molding mold in a lenticular sheet by primary vacuum molding in the method of forming a three-dimensional pattern of a three-dimensional molded product according to the present invention.
3 is an explanatory view showing a step of cutting and separating the molded part of the lenticular sheet in the three-dimensional pattern forming method of the three-dimensional molded article according to the present invention.
Figure 4 is an explanatory diagram showing the step of integrally bonding the molded part of the lenticular sheet and the transparent thermoplastic resin sheet by secondary vacuum molding in the three-dimensional pattern forming method of the three-dimensional molded article according to the present invention.
5 is an explanatory view showing a step of manufacturing a three-dimensional molded cover in the three-dimensional pattern forming method of the three-dimensional molded article according to the present invention.
6 is an explanatory view showing a step of forming a three-dimensional surface pattern on the surface of the three-dimensional molded article in the three-dimensional pattern forming method of the three-dimensional molded article according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

The three-dimensional pattern forming method 100 of the three-dimensional molded article according to the present invention, as shown in FIG. 1, a plastic synthetic resin such as a console box or a panel around the instrument panel, or a case or cover of various electronic devices, Alternatively, a step (S1) of manufacturing a molding die 120 corresponding to the shape of various three-dimensional molded products 110 manufactured using an aluminum material or the like is performed.

Such a molding die 120 is prepared and manufactured in a conventional manner corresponding to the three-dimensional molded article 110 to form a three-dimensional pattern by using materials such as conventional aluminum, plastic, copper or copper. .

Next, as shown in FIG. 2, the molding die 120 is disposed in the vacuum molding machine 122, and the lenticular sheet 130 is disposed on the molding die 120 to perform primary vacuum molding ( S2) is made.

In this first vacuum forming step, the lens surface 132 of the lenticular sheet 130 is disposed to face the upper side, and the back surface on which the three-dimensional surface pattern 134 is printed is disposed to face the forming mold 120. Next, the lenticular sheet 130 is heated in a good state to be molded and softened, and the first vacuum is formed on the mold 120 to form the molding unit 140 corresponding to the mold 120 in the lenticular sheet 130. do.

The first vacuum molding step is to heat the lenticular sheet 130 for 23 seconds to 25 seconds at a temperature of 310 ℃ ~ 320 ℃ using a heater (not shown), the lenticular sheet 130 using a movable heater ) Or as the lenticular sheet 130 moves over or between the fixed heaters.

In the heating process of the lenticular sheet 130, when heated and vacuumed for less than 23 seconds at a temperature of 310 ℃ ~ 320 ℃, the lenticular sheet 130 is not in close contact with the mold 120, the unmolded or defective part When the vacuum treatment is performed after heating for more than 25 seconds, the lenticular sheet 130 is overheated, the lens surface 132 is melted, and the stereoscopic ratio is lowered, causing the whitening phenomenon and the back printed portion to burn out.

The lenticular sheet 130 heated and softened in this manner is vacuum molded at a vacuum suction pressure of -720 mm kg (0.0096 Mpa) in the vacuum molding machine 122 to form the lenticular portion 140 corresponding to the outer contour of the molding die 120. It is formed integrally with the sheet 130.

At this time, when the bending of the mold 120 is so severe that the adhesion rate of the lenticular sheet 130 is lowered, after further heating the corresponding portion by using a heater dryer (not shown), the vacuum treatment again.

After the first vacuum molding as described above, as shown in FIG. 3, the lenticular sheet 130 is lifted from the molding die 120 of the vacuum molding machine 122, and the molding unit 140 of the lenticular sheet 130 is formed. Cutting to separate the step (S3) is made.

That is, the lenticular sheet 130 that has been subjected to primary vacuum molding includes a molding part 140 corresponding to the molding mold 120 and the remaining unnecessary part 142 around the molding part 120. Is cut off from the remaining unnecessary portion 142 to separate the molding unit 140 separately.

 Next, as shown in FIG. 4, the molding unit 140 of the lenticular sheet 130 is again placed on the molding die 120 in the vacuum molding machine 122, and the transparent thermoplastic resin sheet 150 is placed thereon. The secondary vacuum forming step (S4) is made.

In this case, the transparent thermoplastic resin sheet 150 is coated with a transparent adhesive 152 on one side, and disposed so that the transparent adhesive 152 is directed toward the molding unit 140 side of the lenticular sheet 130, 2 Differential vacuum molding is integrally bonded to the molding unit 140 of the lenticular sheet 130 and the transparent thermoplastic resin sheet 150.

The transparent thermoplastic resin sheet 150 used in such a step is any one of transparent acrylic, transparent polythiphene (PT), polyvinyl chloride (PVC), and transparent carbon (PC), preferably Is made of transparent acrylic.

Such a transparent acrylic is not only excellent in transparency, but also high in reflectance of light, excellent in surface gloss, and beautiful in appearance.

In addition, the transparent adhesive 152 to be applied to the transparent thermoplastic resin sheet 150 is a special adhesive, composed of synthetic rubber and synthetic resin as a main component, has an evaporation residue of 39.0 to 42.0 (%), 25 ℃ It has a viscosity of 3,500 to 5,000 (cps) at a temperature of 0.85 (20 ° C) at a temperature of 20 ° C. In addition, such a transparent adhesive 152 has a sticking holding time of 5 minutes to 20 minutes at a temperature of 20 ℃, the main solvent is used cyclohexane or normal hep acid.

The transparent adhesive 152 is preferably applied to one side of the transparent thermoplastic resin sheet 150 with a thickness of 35 μm to 38 μm through a roller (not shown). Here, when the transparent adhesive 152 is applied to less than 35㎛, the adhesion rate of the transparent thermoplastic resin sheet 150 is lowered, and when applied to 38㎛ or more, it penetrates into the groove of the concave lens surface of the lenticular sheet 130 and three-dimensional It is not preferable because the three-dimensional appearance of the pattern is poor.

And, it is preferable to apply a thinner to the mold 120 thinner, so that the vacuum-bonded three-dimensional molding cover can be easily separated from the mold.

As described above, the transparent thermoplastic resin sheet 150 having the transparent adhesive 152 coated on one surface thereof is subjected to secondary vacuum molding in a state in which the transparent adhesive 152 is disposed toward the molding part 140 side of the lenticular sheet 130. And integrally bonded to the molding part 140 of the lenticular sheet 130.

At this time, using the heater (not shown) at a temperature of 310 ℃ ~ 320 ℃ for 1 minute 20 seconds to 1 minute 30 seconds, the transparent thermoplastic sheet 150 is heated, and then -720mmkg (0.0096Mpa) of By vacuum forming at a vacuum suction pressure, the molding unit 140 of the lenticular sheet 130 and the transparent thermoplastic resin sheet 150 are integrally bonded.

Here, when the transparent thermoplastic resin sheet 150 is heated at a temperature of 310 ° C. to 320 ° C. for less than 1 minute 20 seconds and vacuumed, unformed and unbonded portions of the transparent thermoplastic resin sheet 150 may occur. In addition, if the vacuum treatment is performed after the temperature exceeds 1 minute and 30 seconds at this temperature, the shape change and partial combustion of the transparent adhesive 152 due to whitening and partial overheating of the transparent thermoplastic resin sheet 150 are not preferable.

As described above, the transparent thermoplastic resin sheet 150 bonded to the lenticular sheet 130 through the transparent adhesive agent 152 completely protects the concave lens surface 132 formed on the front surface of the lenticular sheet 130 from external impact. By maintaining the three-dimensional effect for a long time, and the surface more beautifully shiny can ensure a high-quality appearance.

Next, after the secondary vacuum molding as described above, as shown in FIG. 5, the molding unit 140 and the transparent thermoplastic resin sheet 150 of the lenticular sheet 130 are molded in the vacuum molding machine 122. Step (S5) is taken out from the mold 120, the transparent thermoplastic resin sheet 150 is cut and separated along the molding portion 140 of the lenticular sheet 130, and the three-dimensional molding cover 160 is manufactured. .

In this step (S5) of manufacturing the three-dimensional molding cover 160, that is, the transparent thermoplastic resin sheet 150 integrally bonded with the molding unit 140 of the lenticular sheet 130 through the secondary vacuum molding and bonding And a portion 154 integrally bonded to the molding part 140 and the remaining unnecessary part 156 around the molding part 140. The remaining unnecessary part 156 is integrally bonded to the molding part 140. 154, cut and separated to remove, to produce a three-dimensional molding cover (160).

The three-dimensional molding cover 160 thus produced is completed by drying in a slight heat for 2-3 hours.

In addition, as shown in Figure 6, by applying an adhesive (not shown) to the inner surface of the three-dimensional molded cover 160 manufactured as described above or by using a double-sided tape (not shown) of the three-dimensional molded article 110 Attaching to the outer surface to form a three-dimensional surface pattern 134 on the surface of the three-dimensional molded article 110 is made (S6).

Therefore, the three-dimensional molded article 110 manufactured according to the present invention forms the three-dimensional surface pattern 134 on the surface because the three-dimensional molded cover 160 molded to the surface contour corresponding thereto is integrally attached to the outer surface. .

Hereinafter, the three-dimensional molding cover 160 according to the present invention will be described in more detail.

The three-dimensional molded cover 160 according to the present invention is for forming a three-dimensional surface pattern 134 on the surface of the three-dimensional molded product 110, as shown in cross-section in Figure 5, the outer contour of the three-dimensional molded product 110 3D surface pattern 134 is printed on the rear surface, and the lenticular sheet 130 having a plurality of fine concave lens surfaces 132 is formed on the front surface thereof.

In addition, the lenticular sheet 130 is made of the same three-dimensional structure, and is a structure including a transparent thermoplastic resin sheet 150 which is integrally bonded to the front surface of the lenticular sheet 130 through a transparent adhesive 152.

The lenticular sheet 130 and the transparent thermoplastic resin sheet 150 are integrally formed by vacuum forming on the forming mold 120 in the vacuum molding machine 122, and the outer surface thereof is a transparent thermoplastic resin sheet made of a transparent acrylic resin. Beautiful through the 150, the three-dimensional surface pattern 134 formed on the inner lenticular sheet 130 is exposed to the outside through the transparent thermoplastic resin sheet 150.

According to the three-dimensional pattern forming method 100 of the three-dimensional molded article according to the present invention as described above and the three-dimensional molded cover 160 manufactured using this method, the lenticular sheet 130 and the transparent thermoplastic resin sheet 150 is used. Molded and bonded into a shape corresponding to the three-dimensional molded product 110 to produce a three-dimensional molded cover 160, and then attached to the outer surface of the three-dimensional molded product 110 using a separate adhesive or double-sided tape The surface pattern 134 is formed on the surface of the three-dimensional molded article 110.

Therefore, the present invention can not only completely form the three-dimensional surface pattern 134 on the surface of the three-dimensional three-dimensional molded article 110 having a three-dimensional surface such as a casing or cover of an automobile finishing panel or various electronic devices, but also a lenticular sheet. The transparent thermoplastic resin sheet 150 can completely protect the concave lens surface 132 formed on the front surface of the 130 from external impact, so that the three-dimensional stereoscopic effect lasts for a long time, and the surface of the three-dimensional molded product 110 is beautiful. It is possible to greatly enhance the quality competitiveness of the finished product by securing a high-quality appearance by making it shiny.

Although the present invention has been described in detail with reference to specific embodiments thereof with reference to the accompanying drawings, the present invention is not limited to such specific structures. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the following claims. For example, other equivalent materials may be used to achieve the same function and effect. However, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

100: three-dimensional pattern formation method of the three-dimensional molded article
110: three-dimensional molded product 120: molding frame
122: vacuum molding machine 130: lenticular sheet
132: lens surface 134: three-dimensional surface pattern
140: molding part 142: unnecessary parts
150: transparent thermoplastic resin sheet 152: transparent adhesive
154: bonded portion 156: unnecessary portion
160: three-dimensional molding cover
S1: preparing a mold according to the three-dimensional molded article
S2: forming a molded part corresponding to the molding die in the lenticular sheet
S3: cutting and separating the molded part of the lenticular sheet
S4: step of integrally joining the molded part of the lenticular sheet and the transparent thermoplastic resin sheet
S5: step of producing a three-dimensional molding cover
S6: forming a three-dimensional surface pattern on the surface of the three-dimensional molded article

Claims (5)

In the method for forming a three-dimensional surface pattern on the surface of the three-dimensional molded article,
Manufacturing a molding die corresponding to the three-dimensional molded article;
The mold is placed in a vacuum molding machine, and the lenticular sheet is placed on the mold, and the lens surface is directed to the upper side, and the back surface on which the three-dimensional surface pattern is printed is directed to the molding mold, followed by primary vacuum molding to make the lenticular sheet. Forming a molding part corresponding to the molding mold in the mold;
After the first vacuum molding, lifting the lenticular sheet out of the mold of the vacuum molding machine, and cutting and separating the molded part of the lenticular sheet;
The molded part of the lenticular sheet is again raised on a molding mold in a vacuum molding machine, and a transparent thermoplastic resin sheet is disposed thereon, wherein the transparent thermoplastic resin sheet is coated with a transparent adhesive on one side, and the transparent adhesive is a molded part of the lenticular sheet. Disposing to the side, and then secondarily forming a vacuum to bond the molded part of the lenticular sheet and the transparent thermoplastic sheet integrally;
After the second vacuum molding, the molded part of the lenticular sheet and the transparent thermoplastic resin sheet are lifted from the molding die of the vacuum molding machine, and the transparent thermoplastic resin sheet is cut and separated along the molded part of the lenticular sheet, and the three-dimensional molding cover is removed. Manufacturing; And
Applying an adhesive on the inner surface of the three-dimensional molded cover or attaching to the outer surface of the three-dimensional molded article using a double-sided tape to form a three-dimensional surface pattern on the surface of the three-dimensional molded article: 3 of a three-dimensional molded article comprising a How to form a dimensional pattern. The method of claim 1, wherein the primary vacuum forming step uses a heater to heat the lenticular sheet for 23 seconds to 25 seconds at a temperature of 310 ℃ ~ 320 ℃, and then vacuum at a vacuum suction pressure of -720mmkg (0.0096Mpa) A three-dimensional pattern forming method for a three-dimensional molded article, characterized in that the molding is formed on the lenticular sheet to conform to the contour of the outer surface of the mold. The method of claim 1, wherein the transparent adhesive applied to the transparent thermoplastic sheet is a synthetic rubber and a synthetic resin as a main component, 39.0 to 42.0 (%) evaporation residue (3 minutes), at a temperature of 25 ℃ 3,500 to A method of forming a three-dimensional pattern of a three-dimensional molded article, characterized in that it has a viscosity of 5,000 (cps) and a specific gravity of 0.85 (20 ° C) at a temperature of 20 ° C. The method of claim 1, wherein the secondary vacuum forming and bonding step using a heater to heat the transparent thermoplastic resin sheet for 1 minute 20 seconds to 1 minute 30 seconds at a temperature of 310 ℃ ~ 320 ℃, -720mmkg ( Method of forming a three-dimensional pattern of a three-dimensional molded article characterized in that the vacuum molding at a vacuum suction pressure of 0.0096Mpa) to integrally join the molded part of the lenticular sheet and the transparent thermoplastic resin sheet. In the three-dimensional molded cover for forming a three-dimensional surface pattern on the surface of the three-dimensional molded article,
A lenticular sheet composed of a three-dimensional solid structure corresponding to the outer contour of the three-dimensional molded article, a three-dimensional surface pattern printed on the rear surface, and a plurality of fine concave lens surfaces formed on the front surface thereof; And
And a transparent thermoplastic resin sheet made of the same three-dimensional solid structure as the lenticular sheet and integrally bonded to the front surface of the lenticular sheet through a transparent adhesive agent.
The transparent adhesive has a synthetic rubber and a synthetic resin as a main component, has an evaporation residue of 39.0 to 42.0 (%), a viscosity of 3,500 to 5,000 (cps) at a temperature of 25 ° C., and a temperature of 20 ° C. It has a specific gravity of 0.85 (20 ℃), the transparent adhesive is applied to one side of the transparent thermoplastic resin sheet 35㎛ ~ 38㎛,
And the lenticular sheet and the transparent thermoplastic resin sheet are vacuum-molded on a mold in a vacuum molding machine, and are integrally bonded to each other.

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